// Copyright 2015 Microsoft Corporation. All rights reserved.
// This code is governed by the license found in the LICENSE file.

/*---
description: Elements added after the call to from
esid: sec-array.from
---*/

function Test() {
    var arrayIndex = -1;
    var originalLength = 7;
    var obj = {
      length: originalLength,
      0: 2,
      1: 4,
      2: 8,
      3: 16,
      4: 32,
      5: 64,
      6: 128
    };
    var array = [2, 4, 8, 16, 32, 64, 128];

    function mapFn(value, index) {
      arrayIndex++;
      assert.sameValue(value, obj[arrayIndex], 'The value of value is expected to equal the value of obj[arrayIndex]');
      assert.sameValue(index, arrayIndex, 'The value of index is expected to equal the value of arrayIndex');
      obj[originalLength + arrayIndex] = 2 * arrayIndex + 1;

      return obj[arrayIndex];
    }


    var a = Array.from(obj, mapFn);
    assert.sameValue(a.length, array.length, 'The value of a.length is expected to equal the value of array.length');

    for (var j = 0; j < a.length; j++) {
      assert.sameValue(a[j], array[j], 'The value of a[j] is expected to equal the value of array[j]');
    }
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
